MONTANA FLOW REPORT

Last Updated: December 25, 2025

The state of Montana is experiencing a mix of streamflow conditions, with some rivers reporting above-normal flows while others are below normal. Notably, the St. Mary River near Babb is flowing at an impressive 386.87% of its normal streamflow, with a current flow of 1390 cfs, which could be indicative of potential flooding concerns in the region. Contrastingly, the Missouri River at Fort Benton is flowing at only 84.4% of its average, with a flow of 4330 cfs, signaling a possible flow drought. The Smith River near Ft. Logan saw a significant increase in streamflow with a dramatic 403.97% change in the last 24 hours, which water enthusiasts should monitor closely for sudden changes in conditions. Fishing, boating, and other recreational activities may be affected by these fluctuations.

In terms of specific areas of interest, the Yaak River near Troy and the Fisher River near Libby are flowing at 184.99% and 204.96% of their normal streamflow, respectively, with gage heights that suggest high water levels that could impact nearby communities and popular fishing spots. Whitewater enthusiasts should note that the Gallatin River near Gallatin Gateway is experiencing a moderate increase to 10.31% above normal, with current streamflow measurements at 350 cfs and dropping, which may affect the conditions on popular rafting and kayaking trails. The cities of Missoula and Helena should be aware of the Missouri River's reduced flow (below normal by 25.87% and 22.92%, respectively), which could impact water supplies and local ecosystems. Overall, river and water enthusiasts in Montana should remain vigilant, keeping an eye on streamflow data and gage readings to stay informed about the variable water conditions across the state's rivers and watersheds.

       



Montana has a varied climate and terrain that greatly affects its flow conditions. The state boasts of major rivers such as the Missouri, Yellowstone, and the Clark Fork, which drain into the Mississippi, Missouri, and Columbia Rivers, respectively. Montana also has a number of reservoirs/dams, such as the Fort Peck Dam and the Hungry Horse Dam, which serve as major power sources and water storage for the state. The state's hydrology is influenced by its mountainous terrain, which leads to high precipitation levels and generates snowpacks. These snowpacks, in turn, largely determine the state's flow conditions in the summer months. Montana's flow conditions are also affected by its climate, which is characterized by dry summers and cold winters. Overall, Montana's flow conditions are shaped by a mix of climatic and topographic factors, including watershed, snowpack, and precipitation.


       

Winter Storm Warnings

December 25 2025

Montanans are urged to exercise extreme caution as multiple Winter Weather Advisories are in effect across the state. Freezing rain, leading to slick roads and potential power outages, is expected to affect regions including Eastern Toole, Liberty, Hill, and Northern Blaine Counties, as well as Bears Paw Mountains and Southern Blaine. Similar conditions are anticipated in Eastern Pondera, Eastern Teton Counties, Southern High Plains, and areas below 5000ft in Cascade County, including the Great Falls area. Moreover, dense fog advisories, indicating visibility as low as a quarter mile, have been announced for parts of Fergus County and Central Chouteau County. Residents should be prepared for hazardous travel conditions, especially on bridges and overpasses, and consider delaying travel until conditions improve.


Rafting & Kayaking

River Run Status Streamflow (CFS) Air Temp (F)
Alberton Gorge (St. John to Forrest Grove)
Class III to IV
33.44
Bear Creek to Essex
Class II to III+
RUNNABLE 445 55
Beartrap Canyon - Madison Dam to Route 84
Class III to IV
RUNNABLE 1030 46
Bible Run
Class III to IV
RUNNABLE 529 54
Big Creek to Glacier Rim
Class III- to III
RUNNABLE 1380 47
Border to Polebridge
Class II to II+
TOO LOW 432 45
Camp Baker to Eden Bridge
Class II to II+
RUNNABLE 1970 41
Essex to Moccasin Creek
Class II+
RUNNABLE 1290 49
Gardiner Town Run
Class III- to III+
RUNNABLE 1080 43
Glacier RIm to Blankenship Bridge and Confluence
Class II
RUNNABLE 4590 49
Missoula Town Run
Class II to II+
RUNNABLE 958 49
Moccasin Creek to West Glacier (John Stevens Canyon)
Class II+ to III+
RUNNABLE 4310 53
Moose to Storm Castle
Class III+ to IV+
RUNNABLE 308 51
Polebridge to Big Creek
Class II to III-
RUNNABLE 4590 49
Schafer Meadows to Bear Creek (Upper)
Class III+ to IV+
RUNNABLE 4310 53
West Glacier to Blankenship Bridge
Class II+ to III
RUNNABLE 4310 53
Yankee Jim Canyon (Joe Brown to Miner)
Class III to III+
RUNNABLE 1080 43
       
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